Machine for removing scale from forgings.



No. 779,166. PATENTED JAN. 3, 1905. W. 0. KELLY & G. L. GOELLER.

MACHINE FOR REMOVING SGALE FROM FORGINGS.

APPLICATION FILED MAR. 5, 1904.

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gmmwtow Q vflmeooao William C Kell and M /fl George L. Goelzer No. 779,166. PATENTED JAN. 3, 1905. W. G. KELLY & G. L. G'OELLBR.

MACHINE FOR REMOVING SCALE FROM PORGINGS.

APPLICATION FILED MAR. 5, 1904.

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William QKelly and 3 George L.Goe1ler N01 W100. FATENTBD JAN.3 1905.

W. G. KELLY & G. L. GOELLER. MACHINE FOR REMOVING SCALE FROM FGRGINGS.

APPLICATION FILED MAR. 5, 1904.

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W gay George L. Goeller No. 779,166. PATENTED JAN. 8, 1905. W. G. KELLY & G. L. GOELLER.

MACHINE FOR REMOVING SCALE FROM FORGINGS;

APPL'IOATION IILED MAR.5, 1904.

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William 0. Kelly and fl J3 1 George L. Goeller um/new IINTTED STATES Patented January 3, 1905.

PATENT OFFICE.

WILLIAM C. KELLY AND GEORGE L. GOELLER, OF ALEXANDRIA, INDIANA, ASSIGNORS 'IO KELLY AXE MANUFACTURING COMPANY, OF ALEXAN- DRIA, INDIANA, A CORPORATION OF INDIANA.

MACHINE FOR REMOVING SCALE FROM FORGINGS.

SPECIFICATION forming part of Letters Patent N0. 779,166, dated January 3, 1905.

Application filed March 5,1904. Serial No. 196,655.

To all whom it may concern:

Be it known that we,WILLIAM O. KELLY and GEORGE L. GOELLER, citizens of the United States, residing at Alexandria, in the county of Madison and State of Indiana,have invented certain new and useful Improvements in Machines for Removing Scale from Forgings, of which the following is a specification.

In the manufacture of articles by the dropforging process, such as axes and the like, scale forms upon the exterior of the forging, and this has commonly been removed by grinding. Such grinding is costly, as it consumes considerable time and rapidly wears the grindstones upon which it has commonly been done.

It is the principal object of our invention to remove as much as possible of this objectionable scale prior to the further grinding and polishing required in the finishing operation by a more speedy and less expensive process.

Said invention therefore consists in a machine adapted for the purpose; and it embodies as its principal features a pair of wheels of suitstruction and arrangement of parts, as will be.

hereinafter more particularly described and claimed.

Referring to the accompanying drawings, which are made a part hereof and on which similar reference characters indicate similar parts, Figure 1 is a top or plan view of a ma- 4o chine embodying our said invention; Fig. 2,

a horizontal sectional view as seen when looking downwardly from the dotted line 2 2 in Fig. 3; Fig. 3, a front elevation of said machine; Fig. 4, a side elevation; Fig. 5, a central sectional view as seen when looking in the direction indicated by the arrows from the dotted line 5 5 in Fig. 4;, and Fig. 6 a detail sectional view at the point indicated by the dotted line 6 6 in Fig. 4.

Upon a suitable framework 21 we mount a pair of swinging frames 22 and 23, which are yieldingly held toward each other by a spring 24, but are kept at a predetermined distance apart by the temper-rods 25 and 26, which are made adjustable by any suitable means, as by the nuts 27. Mounted in suitable bearings in these frames are shafts 29 and 30, and upon these shafts are the operating-wheels 31 and 32, by which the work is performed. These are driven by belts 33 and 34, which run to suitable pulleys 35 and 36 on the shafts 29 and 30 from pulleys 37 and 38 on shafts 39 and 40, which said lastnamed shafts are mounted in suitable bearings on the framework directly above the pivots 41 and &2, which carry the swinging frames 22 and 23. The operating-wheels 31 and 32 are driven in opposite directions, as indicated by the arrows, the means for driving them being shown as a belt 43, which runs over pulleys 44L and 45 on the shafts 39 and 4:0 and also around an idlerpulley/IG, carried by shaft 47, this arrangement being best shown in Fig. 3.

For the purpose stated we prefer to make the wheels 31 and 32 of stiff steel wires, which are radially disposed about suitable hubs to which they are secured, and the temper-rods 25 and 26 should be so adjusted that the surfaces of said wheels when the machine is idle should be close to but preferably not in actual contact with each other. Said wheels in operation are revolved at considerable speed, and the points of the wire bristles will strike any object pressed against them with much force. In order to pass the articles to be treated through between these wheels against the force thereof and also with suflicient force to cause them to move away from each other against the force of the spring 24 requires considerable power. For this purpose we provide a strong carrier, and for the purpose of removing the scale from ax-forgings this may consist of a reciprocating carriage 48, the two sides of which are sufficiently separated to permit the operating-wheels 31 and 32 to work between them and which is provided with projecting portions 49 adapted to engage with the mandrel on which the forging is mounted. The upper portion preferably develops into a single bar 50, upon which is secured or formed a rack-bar 51, with which a mutilated gear 52 engages. Said gear is mounted on shaft 53, and on this same shaft is mounted another gear, 54, which forms one of a train through which said shaft is driven from a shaft 60, as is best shown in Fig. 3. The latter shaft carries a pulley 61, which is driven by means of a belt 62 from some suitable source of power. (Not shown.) It requires considerable power to carry the forging against the combined forces of the rotating wheels and the spring by which they are held toward each other, and therefore this gearing is proportioned with that end in view, as will be readily understood upon inspection of Fig. 3 of the drawings. The mutilated gear 52 is so arranged as to cause the carriage 4:8 to travel the required distance to carry the forging between the operating-wheels. This carriage is limited in its downward movement by coming in contact with a suitable stop (or bumperblock) 65. Its upper end is connected by means of a rope 66, running through sheaves 67 and 68, with suitable counterbalancingweights 69, which preferably are nearly but not quite of the same weight as the carriage itself. By this arrangement the carriage is caused to return to its lowermost position by its own gravity, but not Violently, as soon as it escapes from the mutilated gear 52. It is guided in its movements by the ways 71 and 72.

In operation when an aX-forging, as 75, is to be treated by this machine it is placed upon mandrel 76, which is laid across the projections 49 on the carriage 48 at a time when said carriage is at rest or has just begun its ascent. The gear 52 then engages with the rack-bar 51, driving the carriage upwardly and forcing the forging between the operating-wheels. As the carriage approaches the upward limit of its movement the mandrel comes in contact with the pivoted catches 77, mounted on the frame of the machine, and passes somewhat above them. Said catches, which have been forced inwardly by said mandrel in passing, fall outwardly again as soon as the mandrel has passed, so that in case of carelessness on the part of the operator the forging will not fall down into contact with the operating-wheels as the carriage returns to its lowermost position, but will be held above said wheels by said catches until removed. When one forging has been treated, it is removed and the operator inserts another, and so on until the desired work has been finished. As a matter of convenience We prefer to provide a small platform 80, having openings or recesses through which the lugs 49 may pass as the carriage descends, as is best shown in Fig. 2, onto which the forging to be treated may be laid and from which it will be taken by the carriage.

While the primary purpose of our machine is to do the rough work of removing scale, there are some other classes of work in the art of bufling and polishing which may be performed thereon. In doing such other work it is only necessary to provide operatingwheels of a suitable character therefor instead of wheels composed of stiff steel bristles, such as have been described as suitable for use in doing the work in question. We therefore do not desire to be understood as limiting ourselves to any particular use of this machine, but expect to apply it to any use for which it is suitable.

Having thus fully described our said invention, what we claim as new, and desire to secure by Letters Patent, is

1. 1n combination,a pair of swinging frames held yieldingly toward each other, operatingwheels mounted upon said frames, means for driving said wheels, a carrier for carrying the work through between said wheels in one direction and thus subjecting it to the operation thereof, and means for preventing the return of the work.

2. The combination of a pair of pivoted frames, means for holding the same yieldingly toward each other, means for adjusting the yielding devices, operating-wheels mounted on said frames, means for driving said operating-wheels in opposite directions toward each other, a carrier for passing the Work to be operated upon-in one direction between said. wheels, and means for preventing the return of the work.

3. The combination of a pair of swinging frames held yieldingly toward each other, a pair of operating wheels carried by said frames, a carrier passing up-alongside the adjacent faces of said wheels, engaging members on said carrier for receiving the work to be operated upon and driving the same in one direction between, the wheels, guides whereby said carrier is accurately held to its path, and means for preventing the return of the work.

4:. The combination of a pair of operating wheels, a traveling carriage for driving the articles to be treated between said wheels, and means for propelling said carriage consisting of a rack-bar attached thereto and a mutilated gear adapted to engage with said rack-bar.

5. The combination of a pair of attrition devices, a carriage for forcing the work between them, means for operating said carriage in one direction consisting of a rack-bar attached thereto and a mutilated gear engaging with said rack-bar, said carriage being given its return movement by its own gravity.

6. The combination of a pair of attrition devices, a carriage for propelling the work between said devices, positive operating means for driving said carriage in one direction, said carriage being given its return movement by its own gravity, and a counterbalancing-weight secured to said carriage whereby the violence I of its return movement is retarded.

7. The combination of a pair of attrition devices, a carriage for propelling the Work between said devices, and a pivoted catch arranged on the frame beyond said devices adapted to automatically engage the work and prevent its return.

In witness whereof we have hereunto set our hands and seals, at Alexandria, Indiana, this 5 2d day of March, A. D. 1904.

WILLIAM C. KELLY. [n s.]

GEORGE L. GOELLER. [L. s.]

Witnesses:

S. C. HANNA,

WALTER V. NORTON. 

